The school is having a fund raising door to door candy sale with the
promise of a 'secret prize' for the student who sells the most candy.
(The candy is extremely hard to sell because it's made up of sawdust.
Zim: "Yup, that's sawdust.") Intrigued about what the prize could be,
Zim attempts to sell as much candy as possible. Initially he fails, but
he then utilizes virtual reality devices to torment innocent
people and hence persuade them into purchasing his candy bars. Zimsells a
huge quantity of the candy bars and wins the prize—only to find that
there is no 'secret prize' and that it was concocted as a method of
selling more candy bars.